During his time in microgravity, Pettit, an inveterate tinkerer, said he likes to spend his free time either doing ...

Thirty-five years ago, the Hubble Space Telescope was launched into orbit. It's been sending back galactic data and images ...

For 35 years, the Hubble Space Telescope has taken photos of celestial objects across the universe. Look back at 10 photos ...

A two-man crew survives a mission failure, a rocket curves around the Earth and more stellar highlights from October 2018. NASA astronauts Andrew Feustel and Ricky Arnold and Russian cosmonaut ...

When I was a kid, I was fascinated by the Powers of 10 video, which came out in the 1970s. Perhaps you remember it, with the narrator taking us both outward toward the fathomless end of the Universe ...